V4L/DVB (11275): tvaudio: fix mute and s/g_tuner handling

The mute control depends on CHIP_HAS_INPUTSEL, so test for that first.

The s/g_tuner code should check whether getmode/setmode is set at the
beginning instead of filling in the struct and discovering at
the end that this chip doesn't implement audiomodes after all (i.e. is
a simple muxer chip).

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/tvaudio.c b/drivers/media/video/tvaudio.c
index e8ab285..faa9e3d 100644 (file)
--- a/drivers/media/video/tvaudio.c
+++ b/drivers/media/video/tvaudio.c
@@ -1511,6 +1511,8 @@ static int tvaudio_g_ctrl(struct v4l2_subdev *sd,
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_MUTE:
+               if (!(desc->flags & CHIP_HAS_INPUTSEL))
+                       break;
                ctrl->value=chip->muted;
                return 0;
        case V4L2_CID_AUDIO_VOLUME:
@@ -1552,6 +1554,9 @@ static int tvaudio_s_ctrl(struct v4l2_subdev *sd,
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_MUTE:
+               if (!(desc->flags & CHIP_HAS_INPUTSEL))
+                       break;
+
                if (ctrl->value < 0 || ctrl->value >= 2)
                        return -ERANGE;
                chip->muted = ctrl->value;
@@ -1636,7 +1641,9 @@ static int tvaudio_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
 
        switch (qc->id) {
        case V4L2_CID_AUDIO_MUTE:
-               return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
+               if (desc->flags & CHIP_HAS_INPUTSEL)
+                       return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
+               break;
        case V4L2_CID_AUDIO_VOLUME:
                if (desc->flags & CHIP_HAS_VOLUME)
                        return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 58880);
@@ -1661,7 +1668,9 @@ static int tvaudio_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *
        struct CHIPSTATE *chip = to_state(sd);
        struct CHIPDESC *desc = chip->desc;
 
-       if (!(desc->flags & CHIP_HAS_INPUTSEL) || rt->input >= 4)
+       if (!(desc->flags & CHIP_HAS_INPUTSEL))
+               return 0;
+       if (rt->input >= 4)
                return -EINVAL;
        /* There are four inputs: tuner, radio, extern and intern. */
        chip->input = rt->input;
@@ -1678,8 +1687,11 @@ static int tvaudio_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
        struct CHIPDESC *desc = chip->desc;
        int mode = 0;
 
+       if (!desc->setmode)
+               return 0;
        if (chip->radio)
                return 0;
+
        switch (vt->audmode) {
        case V4L2_TUNER_MODE_MONO:
        case V4L2_TUNER_MODE_STEREO:
@@ -1695,7 +1707,7 @@ static int tvaudio_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
        }
        chip->audmode = vt->audmode;
 
-       if (desc->setmode && mode) {
+       if (mode) {
                chip->watch_stereo = 0;
                /* del_timer(&chip->wt); */
                chip->mode = mode;
@@ -1710,15 +1722,17 @@ static int tvaudio_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
        struct CHIPDESC *desc = chip->desc;
        int mode = V4L2_TUNER_MODE_MONO;
 
+       if (!desc->getmode)
+               return 0;
        if (chip->radio)
                return 0;
+
        vt->audmode = chip->audmode;
        vt->rxsubchans = 0;
        vt->capability = V4L2_TUNER_CAP_STEREO |
                V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 
-       if (desc->getmode)
-               mode = desc->getmode(chip);
+       mode = desc->getmode(chip);
 
        if (mode & V4L2_TUNER_MODE_MONO)
                vt->rxsubchans |= V4L2_TUNER_SUB_MONO;